CN103915880B - A kind of full power-off charger of electric vehicle switching device - Google Patents
A kind of full power-off charger of electric vehicle switching device Download PDFInfo
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- CN103915880B CN103915880B CN201410147208.6A CN201410147208A CN103915880B CN 103915880 B CN103915880 B CN 103915880B CN 201410147208 A CN201410147208 A CN 201410147208A CN 103915880 B CN103915880 B CN 103915880B
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Abstract
The invention discloses a kind of full power-off charger of electric vehicle switching device, it is characterized in that: comprise step-down and voltage stabilizing circuit, charging holding circuit, immediately charging circuit, reservation charging circuit, current detection circuit, full power-down circuit, controller and peripheral circuit and adapter.The present invention efficiently solves traditional electrical vehicle charger after charging terminates, can not power-off or only disconnected partial circuit, thus affect the problem in useful life, simultaneously, user also can select charge mode avoid peak of power consumption by subscription time charging or charge immediately, this switching device had both improve charger service efficiency, also a saving mass energy and resource.
Description
Technical field
The present invention relates to electric car charger equipment technical field, be specifically related to a kind of full power-off charger of electric vehicle switching device.
Background technology
Along with low-carbon (LC), vigorously advocating of environmental protection trip theory, electric motor car has become the main traffic instrument of people's trip, the electric car charger that most early stage is bought does not have Self-disconnecting function, both waste energy like this, reduce again the useful life of charger, and, major part is in the market autotomyed electric-type electric car charger, function singleness, human oriented design not enough, if together with namely inserting mode of namely filling charging modes organically blending with timing, and power purchase vehicle charger wouldn't be more perfect from a break function difficult problem to solve early stage, this then both or can avoid peak of power consumption and charged according to the User Defined time, also can realize charging immediately, the electric car charger bought early stage can also be made to be fully used simultaneously, then avoid a large amount of wastes of the energy and resource so to a certain extent.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of full power-off charger of electric vehicle switching device, the present invention efficiently solves traditional electrical vehicle charger after charging terminates, can not power-off or only disconnected partial circuit, thus affect the problem in charger useful life, simultaneously, user also can select charge mode avoid peak of power consumption by subscription time charging or charge immediately, and this switching device had both improve charger service efficiency, also a saving mass energy and resource.
The present invention is achieved through the following technical solutions:
A kind of full power-off charger of electric vehicle switching device, is characterized in that: comprise step-down and voltage stabilizing circuit, charging holding circuit, immediately charging circuit, reservation charging circuit, current detection circuit, full power-down circuit, controller and peripheral circuit and adapter;
Described step-down and voltage stabilizing circuit comprise step-down transformer, rectification circuit, voltage stabilizing circuit, filtering and building-out capacitor, described step-down transformer is demoted to line voltage, convert alternating current is become direct current by described rectification circuit, DC power conversion after rectification is become galvanic current 12V and 5V by described voltage stabilizing circuit, described filter capacitor is connected in parallel on rectification circuit two ends, stablize the output voltage after rectification, building-out capacitor is connected in parallel on the input and output two ends of voltage stabilizing chip, plays frequency compensation and anti-self-oscillation effect;
Described charging holding circuit comprises auxiliary relay KA1 coil and normally opened contact is formed, and the coil of auxiliary relay KA1 is connected with voltage stabilizing circuit 12V power supply, and normally opened contact is connected in parallel on charge button two ends;
Described charging circuit immediately comprises model selection and keyboard, auxiliary relay KA2 coil and two groups of normally opened contacts thereof are formed, model selection and keyboard are allocated to charge position immediately, the coil of auxiliary relay KA2 is connected with decompression voltage regulator 12V power supply and drive circuit thereof, one group of normally opened contact is connected on charge button and turns and enters between joint, and another group normally opened contact is connected on a power line producing between joint and output plug;
Described reservation charging circuit comprises model selection and keyboard, auxiliary relay KA3 coil and two groups of normally opened contacts thereof are formed, model selection and keyboard are allocated to reservation charge position, the coil of auxiliary relay KA3 is connected with decompression voltage regulator 12V power supply and drive circuit thereof, one group of normally opened contact is connected on charge button and turns and enters between joint, and another group normally opened contact is connected on a power line producing between joint and output plug;
Described current detection circuit comprises under current relay KI coil for detecting electric current and normally-closed contact is formed, the coil tandem of under current relay KI produces on a power line between joint and output plug at charger, and its normally-closed contact is connected on the ground of 5V power supply and controller input and resistance and connects end;
Described full power-down circuit comprises auxiliary relay KA4 coil and normally-closed contact is formed, the coil of auxiliary relay KA4 and step-down and voltage stabilizing circuit 12V power supply and drive circuit thereof are connected, and normally-closed contact is connected between civil power power line and step-down and voltage stabilizing circuit;
Described controller and peripheral circuit comprise model selection and the outer eeprom memory chip of keyboard, auxiliary relay drive circuit, liquid crystal driving and display screen, clock chip and sheet, controller is connected with model selection and keyboard, auxiliary relay drive circuit, display drive circuit, and passes through virtual I respectively
2c bus is connected with clock chip and the outer eeprom memory chip of sheet, and display screen is connected with controller by display drive circuit;
Described adapter comprises turning and enters joint and produce joint, turns to enter joint and be connected with auxiliary relay KA2 normally opened contact with auxiliary relay KA4 normally-closed contact, produces joint and is connected with under current relay KI coil and auxiliary relay KA2 normally opened contact.
The further Technological improvement plan of the present invention is:
220V voltage is reduced to and is exchanged 15V by described step-down and voltage stabilizing circuit, then after rectification, filtering, voltage stabilizing, produces 12V and 5V DC power supply, and 12V power supply is for auxiliary relay coil, and 5V power supply is for controller and peripheral circuit and chip;
The further Technological improvement plan of the present invention is:
Described controller adopts chip AT89S51 single-chip microcomputer, and clock chip adopts DS1320, and liquid crystal display drive chip adopts PCF8576, and LCDs adopts screen TC1602A, and the outer eeprom memory chip of sheet adopts AT24C02.
The present invention compared with prior art, there is following obvious advantage, the present invention adopts electric car charger switching device, only need existing electric power plug of electric vehicle charging device and output plug to be inserted on this switching device and can to charge, full power down function after utilizing the double mode charging of chip microcontroller and floating charge time delay, simple to operation, energy-saving effect is obvious, not only effect useful life of extending charger and the charger bought before making full use of.And existing charger both can independently use, use after also can connecting this switching device, therefore market application foreground of the present invention is extensive.
Accompanying drawing explanation
Fig. 1 is circuit block diagram of the present invention;
Fig. 2 is step-down of the present invention and voltage stabilizing circuit figure.
Embodiment
As shown in Figure 1, 2, the present invention includes step-down and voltage stabilizing circuit 9, charging holding circuit, immediately charging circuit, reservation charging circuit, current detection circuit, full power-down circuit, controller 19 and peripheral circuit and adapter.Step-down and voltage stabilizing circuit 9 comprise step-down transformer, rectification circuit, the integrated voltage-stabilized chip of 12V and 5V, filtering and building-out capacitor and form, and produce stable 12V and 5V power supply for controller 19 and peripheral circuit and auxiliary relay coil 10,16,17,18; Charging holding circuit comprises auxiliary relay KA1 coil 10 and its normally opened contact 6 is formed, and the 12V power supply that coil 10 and the voltage stabilizing circuit of auxiliary relay KA1 export is connected, and normally opened contact 6 is connected in parallel on charge button 5 two ends; Charging circuit comprises model selection and keyboard 14, auxiliary relay KA2 coil 16 and its two groups of normally opened contacts 7 and 26 formation immediately, model selection and keyboard 14 are allocated to charge position immediately, the 12V power supply that coil 16 and the decompression voltage regulator 9 of auxiliary relay KA2 export and drive circuit 15 thereof are connected, normally opened contact 7 is connected on charge button 5 and turns to enter between joint 23, and normally opened contact 26 is connected on a power line producing between joint 27 and output plug 30; Reservation charging circuit comprises model selection and keyboard 14, auxiliary relay KA3 coil 17 and its two groups of normally opened contacts 8 and 27 are formed, model selection and keyboard 14 are allocated to reservation charge position, the 12V power supply that coil 17 and the decompression voltage regulator 9 of auxiliary relay KA3 export and drive circuit 15 thereof are connected, normally opened contact 8 is connected in parallel on normally opened contact 7 two ends of auxiliary relay KA2, and normally opened contact 27 is connected in parallel on normally opened contact 26 two ends of auxiliary relay KA2; Under current relay KI coil 25 and its normally-closed contact 12 that current detection circuit comprises for detecting electric current are formed, the coil 25 of under current relay KI is serially connected on the power line producing between joint 24 and output plug 30 of switching device 2, and its normally-closed contact 12 is connected on the end that connects of the ground of 5V power supply and the input of controller 9 and pull-up resistor 11; Full power-down circuit comprises auxiliary relay KA4 coil 18 and its normally-closed contact 4 is formed, the coil 18 of auxiliary relay KA4 and step-down and voltage stabilizing circuit 12V power supply and drive circuit 15 thereof are connected, and normally-closed contact 4 is connected between civil power power line and step-down and voltage stabilizing circuit 9; Controller 9 and peripheral circuit comprise model selection and keyboard 14, auxiliary relay drive circuit 15, liquid crystal driving 20 and display screen 21, clock chip 22, the outer eeprom memory 13 of sheet are formed, controller 9 with model selection and keyboard 14, be connected with auxiliary relay drive circuit 15 and liquid crystal display drive circuit 20, pass through virtual I
2c bus is connected with clock chip 22 and eeprom chip 13, display screen 21 is connected with controller 9 through liquid crystal driving 20.Above-mentioned KA1, KA2, KA3, KA4 tetra-auxiliary relays, KA1 plays charging maintenance effect, and KA2 plays charging circuit connection function immediately, KA3 plays reservation charging circuit connection function, KA4 plays delay cut-off effect, and 1 is existing electric car charger, and 2 is electric car charger charging switching device.
Composition graphs 1,2 sketches the course of work of the present invention:
Joint 23 is entered when existing electric car charger mains plug 28 inserts to turn, output plug 29 inserts and produces joint 24, switching device output plug 30 connects after battery 31 and attaching plug 3 insert city-level 220V power supply, click charge button 5, step-down and voltage stabilizing circuit is made to export 12V and 5V power supply, auxiliary relay KA1 coil 10 obtains electric, and its normally opened contact 6 closes, and makes switching device continue to switch on power.When select immediately charge mode time, controller 19 output signal immediately make auxiliary relay KA2 coil 16 electric, its normally opened contact 7 and 26 closes, and at this moment namely electric car charger 1 switches on power and to charge to battery 31; When selecting reservation charge mode, user sets subscription time, or the paddy electricity charging key (acquiescence is the paddy electricity phase after at 9 in evening) pressed on lower keyboard, the time that controller 19 sets according to user or paddy electricity arrive moment output signal make auxiliary relay KA3 coil 17 electric, its normally opened contact 8 and 27 closes, and at this moment namely electric car charger 1 switches on power and to charge to battery 31.When charger 1 is in the constant current constant voltage large current charge stage, flow through under current relay KI coil 25 electric current comparatively large, its contact 12 disconnects, when charger 1 is in the floating charge low current charge stage, flow through under current relay KI coil 25 electric current less, under current relay KI contact 12 closes, controller 19 time delay several seconds (namely the floating charge stage confirms) start-up study function afterwards, when delay time is to (namely float terminates), controller 19 output signal makes middle auxiliary relay KA4 coil 18 obtain electric, its normally-closed contact 4 disconnects, now step-down and voltage stabilizing circuit quit work because losing power supply, auxiliary relay KA1 coil 10 dead electricity, its normally opened contact 6 resets, now switching device power-off, then auxiliary relay KA2, KA3 coil 16, 17 dead electricity thereupon, its normally opened contact 7 and 26, 8 and 27 reset disconnection immediately, charger 1 and battery 31 are disconnected with switching device 2, thus realize electric car charger 1 and the full power down function of switching device 2, wherein, clock chip 22 is used for producing real-time time, the outer eeprom chip 13 of sheet is used for preserving the reservation charging interval that user set last time, LCDs 21 is used for showing real-time time and reservation charging interval.
The part that the present invention does not relate to prior art that maybe can adopt all same as the prior art is realized.
Claims (3)
1. a full power-off charger of electric vehicle switching device, is characterized in that: comprise step-down and voltage stabilizing circuit, charging holding circuit, immediately charging circuit, reservation charging circuit, current detection circuit, full power-down circuit, controller and peripheral circuit and adapter;
Described step-down and voltage stabilizing circuit comprise step-down transformer, rectification circuit, voltage stabilizing circuit, filtering and building-out capacitor, described step-down transformer is demoted to line voltage, convert alternating current is become direct current by described rectification circuit, DC power conversion after rectification is become galvanic current 12V and 5V by described voltage stabilizing circuit, described filter capacitor is connected in parallel on rectification circuit two ends, stablize the output voltage after rectification, building-out capacitor is connected in parallel on the input and output two ends of voltage stabilizing chip, plays frequency compensation and anti-self-oscillation effect;
Described charging holding circuit comprises auxiliary relay KA1 coil and normally opened contact is formed, and the coil of auxiliary relay KA1 is connected with voltage stabilizing circuit 12V power supply, and normally opened contact is connected in parallel on charge button two ends;
Described charging circuit immediately comprises model selection and keyboard, auxiliary relay KA2 coil and two groups of normally opened contacts thereof are formed, model selection and keyboard are allocated to charge position immediately, the coil of auxiliary relay KA2 is connected with decompression voltage regulator 12V power supply and drive circuit thereof, one group of normally opened contact is connected on charge button and turns and enters between joint, and another group normally opened contact is connected on a power line producing between joint and output plug;
Described reservation charging circuit comprises model selection and keyboard, auxiliary relay KA3 coil and two groups of normally opened contacts thereof are formed, model selection and keyboard are allocated to reservation charge position, the coil of auxiliary relay KA3 is connected with decompression voltage regulator 12V power supply and drive circuit thereof, one group of normally opened contact is connected on charge button and turns and enters between joint, and another group normally opened contact is connected on a power line producing between joint and output plug;
Described current detection circuit comprises under current relay KI coil for detecting electric current and normally-closed contact is formed, the coil tandem of under current relay KI produces on a power line between joint and output plug at charger, and its normally-closed contact is connected on the ground of 5V power supply and controller input and resistance and connects end;
Described full power-down circuit comprises auxiliary relay KA4 coil and normally-closed contact is formed, the coil of auxiliary relay KA4 and step-down and voltage stabilizing circuit 12V power supply and drive circuit thereof are connected, and normally-closed contact is connected between civil power power line and step-down and voltage stabilizing circuit;
Described controller and peripheral circuit comprise model selection and the outer eeprom memory chip of keyboard, auxiliary relay drive circuit, liquid crystal driving and display screen, clock chip and sheet, controller is connected with model selection and keyboard, auxiliary relay drive circuit, display drive circuit, and passes through virtual I respectively
2c bus is connected with clock chip and the outer eeprom memory chip of sheet, and display screen is connected with controller by display drive circuit;
Described adapter comprises turning and enters joint and produce joint, turns to enter joint and be connected with auxiliary relay KA2 normally opened contact with auxiliary relay KA4 normally-closed contact, produces joint and is connected with under current relay KI coil and auxiliary relay KA2 normally opened contact.
2. the full power-off charger of electric vehicle switching device of one according to claim 1, it is characterized in that: 220V voltage is reduced to and exchanged 15V by described step-down and voltage stabilizing circuit, then after rectification, filtering, voltage stabilizing, 12V and 5V DC power supply is produced, 12V power supply is for auxiliary relay coil, and 5V power supply is for controller and peripheral circuit and chip.
3. the full power-off charger of electric vehicle switching device of one according to claim 1, it is characterized in that: described controller adopts chip AT89S51 single-chip microcomputer, clock chip adopts DS1320, liquid crystal display drive chip adopts PCF8576, LCDs adopts screen TC1602A, and the outer eeprom memory chip of sheet adopts AT24C02.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410147208.6A CN103915880B (en) | 2014-04-14 | 2014-04-14 | A kind of full power-off charger of electric vehicle switching device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410147208.6A CN103915880B (en) | 2014-04-14 | 2014-04-14 | A kind of full power-off charger of electric vehicle switching device |
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| CN103915880A CN103915880A (en) | 2014-07-09 |
| CN103915880B true CN103915880B (en) | 2015-09-30 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105337331A (en) * | 2014-08-12 | 2016-02-17 | 青岛特锐德电气股份有限公司 | Electromobile group charging method and system |
| CN105006703A (en) * | 2015-07-17 | 2015-10-28 | 淮安信息职业技术学院 | Power supply socket capable of reserving on-off |
| CN105048600B (en) * | 2015-08-31 | 2017-06-16 | 淮安信息职业技术学院 | A kind of public garage electric motor car charging central control device |
| CN108075498A (en) * | 2016-11-08 | 2018-05-25 | 赵文昊 | A kind of battery charge controller |
| CN108418270A (en) * | 2018-03-23 | 2018-08-17 | 郑州宇通重工有限公司 | A kind of charging equipment intelligent power supply control system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203481896U (en) * | 2013-10-17 | 2014-03-12 | 淮安信息职业技术学院 | All power-off charger for electric vehicle |
| CN203774851U (en) * | 2014-04-14 | 2014-08-13 | 淮安信息职业技术学院 | Full-power-off electric vehicle charger adapter device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5372031B2 (en) * | 2011-01-11 | 2013-12-18 | 株式会社フルタイムシステム | Electric vehicle charging device |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203481896U (en) * | 2013-10-17 | 2014-03-12 | 淮安信息职业技术学院 | All power-off charger for electric vehicle |
| CN203774851U (en) * | 2014-04-14 | 2014-08-13 | 淮安信息职业技术学院 | Full-power-off electric vehicle charger adapter device |
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